3D printer



FIG. 1 is a top perspective view of a 3D printer;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The dashed broken lines in the drawings iliustrate portions of the 3D printer and form no part of the claimed design. 

CLAIM We claim the ornamental design for a 3D printer, as shown and described. 